Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this special weather statement at Aug 2, 2021, 8:18 AM CDT for Bexar County, Comal County, Texas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2021, 8:18 AM CDT (13:18 UTC)
- Expired
- Aug 2, 2021, 9:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Austin/San Antonio, TX
Counties Bexar County, TX, Comal County, TX
The radar
The Austin/San Antonio radar (KEWX), 52 km from the middle of the area, began a volume at 13:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 1.3 hours before the alert went out and 225 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 241 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
519
WWUS84 KEWX 021318
SPSEWX
Special Weather Statement
National Weather Service Austin/San Antonio TX
818 AM CDT Mon Aug 2 2021
TXZ189-204>206-220-021400-
Comal TX-Atascosa TX-Bexar TX-Medina TX-Kendall TX-
818 AM CDT Mon Aug 2 2021
...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MEDINA...
NORTHWESTERN ATASCOSA...SOUTHEASTERN KENDALL...BEXAR AND CENTRAL
COMAL COUNTIES UNTIL 900 AM CDT...
At 818 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Guadalupe River State Park to 6 miles
southwest of Lackland AFB. Movement was east at 15 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
San Antonio, Schertz, Universal City, Live Oak, Boerne, Selma,
Stinson Municipal Airport, San Antonio Int Airport, Randolph AFB,
Canyon Lake, Leon Valley, Helotes, Fair Oaks Ranch, Kirby, Alamo
Heights, Windcrest, Terrell Hills, Bulverde, Garden Ridge and Shavano
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2924 9884 2970 9880 2972 9878 2973 9880
2990 9878 2991 9820 2962 9825 2959 9831
2956 9830 2955 9827 2919 9834 2912 9840
2910 9840
TIME...MOT...LOC 1318Z 269DEG 13KT 2985 9853 2932 9869
$$
BRADYThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 7:53 PM CDT | Areal Flood Advisory | EWX | Bandera, Real | 3 hr |
| Aug 1, 11:02 PM CDT | Areal Flood Advisory | EWX | Kendall | 3 hr |
| Aug 2, 12:27 AM CDT | Areal Flood Advisory | EWX | Bastrop, Hays, Travis | 3 hr |
| Aug 2, 3:45 AM CDT | Areal Flood Advisory | EWX | Comal, Guadalupe, Hays | 4 hr |
| Aug 2, 3:53 AM CDT | Areal Flood Advisory | EWX | Edwards, Kinney | 4 hr |
| Aug 2, 4:09 AM CDT | Flash Flood Warning | EWX | Comal, Guadalupe | 4 hr |
| Aug 2, 4:13 AM CDT | Areal Flood Advisory | EWX | Uvalde | 4 hr |
| Aug 2, 5:41 AM CDT | Flash Flood Warning | EWX | Guadalupe | 4 hr |
| Aug 2, 5:45 AM CDT | Areal Flood Advisory | EWX | Bexar, Guadalupe, Wilson | 3 hr |
| Aug 2, 5:51 AM CDT | Areal Flood Advisory | EWX | Bandera, Real | 3 hr |
| Aug 2, 5:57 AM CDT | Areal Flood Advisory | EWX | Comal, Hays | 4 hr |
| Aug 2, 6:37 AM CDT | Areal Flood Advisory | EWX | Bandera, Kerr, Medina | 4 hr |
| Aug 2, 6:37 AM CDT | Flash Flood Warning | EWX | Comal | 5 hr |
| Aug 2, 6:52 AM CDT | Flash Flood Warning | EWX | Hays | 3 hr |
| Aug 2, 7:15 AM CDT | Areal Flood Advisory | EWX | Bandera, Bexar, Comal, Kendall, Kerr, Medina | 5 hr |
| Aug 2, 7:29 AM CDT | Special Weather Statement | EWX | Bexar | 46 min |
| Aug 2, 7:47 AM CDT | Flash Flood Warning | EWX | Bexar, Comal, Kendall | 4 hr |
| Aug 2, 8:13 AM CDT | Areal Flood Advisory | EWX | Kinney | 3 hr |
| Aug 2, 8:15 AM CDT | Areal Flood Advisory | EWX | Bastrop, Lee, Travis, Williamson | 5 hr |
| Aug 2, 8:26 AM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Kendall | 4 hr |
| Aug 2, 8:36 AM CDT | Areal Flood Advisory | EWX | Bexar | 4 hr |
| Aug 2, 9:16 AM CDT | Areal Flood Advisory | EWX | Blanco, Hays, Travis | 3 hr |
| Aug 2, 10:25 AM CDT | Areal Flood Advisory | EWX | Kinney, Maverick, Uvalde, Zavala | 3 hr |
| Aug 2, 2:45 PM CDT | Areal Flood Advisory | EWX | Bandera, Edwards, Kerr, Real, Val Verde | 3 hr |
| Aug 2, 4:56 PM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 3 hr |
| Aug 2, 5:12 PM CDT | Areal Flood Advisory | EWX | Blanco, Hays | 3 hr |
| Aug 2, 6:19 PM CDT | Areal Flood Advisory | EWX | Caldwell, Hays, Travis | 2 hr |
Nearby
Special Weather Statements in Texas, 2021Every special weather statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.